Revert 47363 - Fix build on ChromeOS by adding required return value checks.
Revert 47363 - Fix build on ChromeOS by adding required return value checks.

It looks that this change caused lots of test failures. Reverts for now and wait and see.

http://buildbot.jail.google.com/buildbot/waterfall/builders/Mac10.5%20Tests%20(dbg)(2)/builds/16790

TBR=sky

TEST=none
BUG=none

Review URL: http://codereview.chromium.org/2098007

TBR=phajdan.jr@chromium.org
Review URL: http://codereview.chromium.org/2076004

git-svn-id: de016e52bd170d2d4f2344f9bf92d50478b649e0@47396 0039d316-1c4b-4281-b951-d872f2087c98

yitian134/chromium,ropik/chromium,ropik/chromium,adobe/chromium,yitian134/chromium,gavinp/chromium,adobe/chromium,adobe/chromium,yitian134/chromium,Crystalnix/house-of-life-chromium,Crystalnix/house-of-life-chromium,yitian134/chromium,ropik/chromium,Crystalnix/house-of-life-chromium,ropik/chromium,adobe/chromium,adobe/chromium,Crystalnix/house-of-life-chromium,ropik/chromium,ropik/chromium,yitian134/chromium,yitian134/chromium,Crystalnix/house-of-life-chromium,adobe/chromium,gavinp/chromium,yitian134/chromium,Crystalnix/house-of-life-chromium,yitian134/chromium,gavinp/chromium,adobe/chromium,adobe/chromium,yitian134/chromium,yitian134/chromium,Crystalnix/house-of-life-chromium,ropik/chromium,gavinp/chromium,gavinp/chromium,gavinp/chromium,Crystalnix/house-of-life-chromium,gavinp/chromium,gavinp/chromium,adobe/chromium,gavinp/chromium,Crystalnix/house-of-life-chromium,adobe/chromium,ropik/chromium,Crystalnix/house-of-life-chromium,adobe/chromium,Crystalnix/house-of-life-chromium,gavinp/chromium,ropik/chromium